CaptainPicard, who was shifting through time between three different time periods due to the influence of Q, ordered an inverse tachyon pulse initiated in all three time periods to penetrate the subspace barrier and examine the interior of the eruption. Picard learned from Q that, approximately 3.5 billion years previously, the eruption would disrupt the formation of life on Earth, eliminating humanity from the timeline unless Picard found a way to stop the eruption from traveling back through time. It was eventually discovered that the convergence of the tachyon pulses in the three different time periods caused the anomaly in the first place. By taking each time period's Enterprise into the center of the eruption and initiating a static warp shell, they were able to create an artificial subspace barrier to separate time and anti-time. Although this action led to the destruction of all three Enterprises, it successfully collapsed the anomaly and negated the timelines in which these events occurred. (TNG: "All Good Things...")